Typically in A/C circuts, white is negative, green is ground. To differentiate from A/C, D/C circuts use black as ground, white or red as positive (or any other color than black). Bottom line-hook it up and see which way the fan rotates. Then you'll have it right. Good Luck, TomC

I believe you will find that the fan will rotate in the correct direction regardless of how the power is hooked up. To reverse the rotation of a DC fan (unless it is designed to be reverse operated) you have to tear into it and reverse the connection of the field or armature leads to get it to run in the opposite direction.

Regarding AC circuits, I have never heard of a negative connection. White is neutral, green is ground and black is hot.

Typically in A/C circuts, white is negative, green is ground. To differentiate from A/C, D/C circuts use black as ground, white or red as positive (or any other color than black). Bottom line-hook it up and see which way the fan rotates. Then you'll have it right. Good Luck, TomC

« Last Edit: September 05, 2006, 11:04:33 AM by DrivingMissLazy »

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Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body. But rather to skid in sideways, chocolate in one hand, a good Reisling in the other, body thoroughly used up, totally worn out and screaming: WOO HOO, what a ride

Ordinarily, I would agree with Richard about reversing the direction of a DC motor. That would be if it had a field winding. But, I am betting that the motor is a permanent magnet motor, so reversing the power in will reverse the rotation.

One clue is that the motors do not come with four wires, which you would need in order to make these reversible by throwing a switch, if they had a field winding. The other clue is that they are very low current motors.

Ordinarily, I would agree with Richard about reversing the direction of a DC motor. That would be if it had a field winding. But, I am betting that the motor is a permanent magnet motor, so reversing the power in will reverse the rotation.

One clue is that the motors do not come with four wires, which you would need in order to make these reversible by throwing a switch, if they had a field winding. The other clue is that they are very low current motors.

For what it's worth.

Tom CaffreySuncatcherKetchikan, Alaska

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Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body. But rather to skid in sideways, chocolate in one hand, a good Reisling in the other, body thoroughly used up, totally worn out and screaming: WOO HOO, what a ride

Richard,Showing my ignorance here, But I did hook up my fantastic fan backward. It did run backward. I have the model with the rain sensor and it has the reversible option. I mistakenly thought that black was the ground and hooked it up. When I turned it on I had to rewire it due to the fact that when the fan was switched to OUT it pulled air in. I tried to convince the wife that OUT meant outside air coming in, but she made me change it anyway.Devin

Richard,Showing my ignorance here, But I did hook up my fantastic fan backward. It did run backward. I have the model with the rain sensor and it has the reversible option. I mistakenly thought that black was the ground and hooked it up. When I turned it on I had to rewire it due to the fact that when the fan was switched to OUT it pulled air in. I tried to convince the wife that OUT meant outside air coming in, but she made me change it anyway.Devin

P.S.Where's my nickel?

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Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body. But rather to skid in sideways, chocolate in one hand, a good Reisling in the other, body thoroughly used up, totally worn out and screaming: WOO HOO, what a ride